-
公开(公告)号：US20180287329A1
公开(公告)日：2018-10-04
申请号：US15944360
申请日：2018-04-03
Applicant: Massachusetts Institute of Technology
Inventor： Yi YANG , Aviram MASSUDA , Charles ROQUES-CARMES , Nicholas H. RIVERA , Tena DUBCEK , John D. JOANNOPOULOS , Karl Kimon BERGGREN , Ido E. KAMINER , Marin SOLJACIC , Yujia YANG , Steven E. KOOI , Phillip Donald Keathley
Abstract: An apparatus for generating Smith-Purcell radiation having at least one spectral component at a wavelength A includes a periodic structure including a dielectric material and an electron source, in electromagnetic communication with the periodic structure, to emit an electron beam propagating within about 5λ from a surface of the periodic structure to induce emission of the Smith-Purcell radiation. The electron beam has an electron energy tunable between about 0.5 keV and about 40 keV so as to change a wavelength of the Smith-Purcell radiation.
-
公开(公告)号：US20250104883A1
公开(公告)日：2025-03-27
申请号：US18917271
申请日：2024-10-16
Applicant: Massachusetts Institute of Technology
Inventor： Keith A. NELSON , Steven E. KOOI , Yun KAI
Abstract: An apparatus and method produce, from a Gaussian laser pulse, a sequence of laser rings having a spatiotemporal configuration such that impingement of the laser rings on a surface of a nuclear material in a target assembly produces constructively interfering shock waves that converge on a focal region of the nuclear material, thereby producing sufficient pressures and temperatures to form tritium in the focal region. The temporal and/or spatial intervals between the concentric pulsed laser rings are adjusted to substantially match propagation times of impingement from one ring to the next in a shock propagation layer of the target assembly. A second laser or neutron tube may be used to create a cavitation bubble at the focus. In addition to the shock waves generated in the plane of the surface, through-plane shock waves can be generated to increase the overall shock pressure.
-
Search Results
2
records
(took 0.012 seconds)
